21677575

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{971}}^1$

素因数の和:1047

約数の個数: 24

約数和(自身を含む): 28926720

約数和(自身を除く): 7249145

約数列:

[1, 5, 19, 25, 47, 95, 235, 475, 893, 971, 1175, 4465, 4855, 18449, 22325, 24275, 45637, 92245, 228185, 461225, 867103, 1140925, 4335515, 21677575]

約数ペア:

[(1, 21677575), (5, 4335515), (19, 1140925), (25, 867103), (47, 461225), (95, 228185), (235, 92245), (475, 45637), (893, 24275), (971, 22325), (1175, 18449), (4465, 4855)]